TR: push/pull dynamometer/Calibrated beam keyweight measure

gordon stelter lclgcnp@yahoo.com
Sat, 10 May 2003 09:06:11 -0700 (PDT)


Well, I sort of got off on a different "track" here, (
no pun intended ).  The varying voltages transmitted
by the rheostat would, of course, correspond to the
different leverages established by the sliding
weight/contact, as the lever pressed on the key.
    These then would be sent directly into a computer
with a program to interpret them ( I'll leave that
part to one of you brainy types to figure out!
Sarah???)
    The big problem, as I percieve it, would be
preventing drag from the wires interfeing in any way
with the measurements. An old, high quality stereo
tone arm with adjustable counterbalances might be a
good model to use, to avid this. 
     Or a radio transmitter?
     Have a nice day.
     Thump
     
    The voltage set up would correspond with
--- Bill Ballard <yardbird@vermontel.net> wrote:
> At 6:00 AM -0700 5/10/03, gordon stelter wrote:
> >i.e. A simple linear rheostat.
> 
> That'll get you distance along the lever arm. Now
> how 'bout the 
> numbers off the dynamometer dial? Remember, all data
> has to be 
> digital, and in some standard format readable by
> engineering apps. 
> (Ooops, do I hear the clink of Sarah putting her
> reading glasses on?)
> 
> Bill Ballard RPT
> NH Chapter, P.T.G.
> 
> "I gotta go ta woik...."
>      ...........Ian Shoales, Duck's Breath Mystery
> Theater
> +++++++++++++++++++++
> _______________________________________________
> pianotech list info:
https://www.moypiano.com/resources/#archives


__________________________________
Do you Yahoo!?
The New Yahoo! Search - Faster. Easier. Bingo.
http://search.yahoo.com

This PTG archive page provided courtesy of Moy Piano Service, LLC